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Texas Instruments LM2675M-5.0/NOPB
- Part No.:
- LM2675M-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2675M-5.0/NOPB.pdf
- Description:
- IC REG BUCK 5V 1A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,164
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Product details
Overview
LM2675M-5.0/NOPB from Texas Instruments is a monolithic step-down (buck) DC-DC switching regulator delivering 5 V at up to 1 A output current, operating from 8–40 V input, with ±1.5% output voltage tolerance, 260 kHz fixed-frequency operation, and 90% efficiency at 12 VIN/1 A. It serves as a primary power stage in industrial power supplies, embedded system rails, and point-of-load converters.
For engineers reviewing the LM2675M-5.0/NOPB datasheet, LM2675M-5.0/NOPB pinout, LM2675M-5.0/NOPB application, or LM2675M-5.0/NOPB equivalent, key selection criteria include its fixed 5 V output, SOIC-8 package compatibility, thermal shutdown protection, TTL-compatible enable control, and minimal external component count (5 total).
Technical Context
The LM2675M-5.0/NOPB integrates a DMOS high-side power switch, internal frequency compensation, and a 260 kHz oscillator-enabling stable regulation without external compensation components. Its feedback loop compares output voltage against an internal 1.21 V reference, with the FB pin internally tied to the output for fixed-voltage versions.
It operates in continuous conduction mode up to 1 A load, supports TTL-level ON/OFF control with 50 μA standby current, and includes cycle-by-cycle current limiting and thermal shutdown. Input voltage range (6.5–40 V) and output accuracy (±1.5% over line/load/temperature) are specified across –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V, ±1.5% tolerance over full line, load, and temperature range - ensures stable microcontroller or FPGA core rail without external resistor divider. |
| Max Output Current | 1 A continuous - supports single-rail powering of mid-power digital subsystems (e.g., ARM Cortex-M7 MCU + peripherals). |
| Input Voltage Range | 6.5 V to 40 V - accommodates 12 V and 24 V industrial bus inputs, including automotive battery transients (up to 40 V). |
| Switching Frequency | 260 kHz (±10%) - enables use of compact 33–68 µH shielded inductors and reduces EMI compared to lower-frequency buck controllers. |
| Efficiency | 90% typical at 12 VIN/1 A - minimizes thermal rise on PCB; copper traces suffice as heat sink under full load. |
| Quiescent Current | 3.6 mA active, 50 µA standby - supports low-power sleep modes in battery-backed or energy-conscious systems. |
| Protection Features | Thermal shutdown, cycle-by-cycle current limit (1.25–2.1 A), and frequency foldback during short-circuit - prevents damage during fault conditions without external circuitry. |
Pinout & Package
LM2675M-5.0/NOPB is supplied in an 8-pin SOIC (D package), 4.9 mm × 6.0 mm body size, with exposed pad not present (non-WSON variant). Pin functions are validated per TI SNVS129G Rev JUNE 2025.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CB | Bootstrap capacitor connection | Connects 470 nF ceramic capacitor between CB and VSW to drive high-side MOSFET gate; critical for proper switch turn-on. |
| 2,3 - NC | No-connect | Internally unconnected; must remain floating - no routing or soldering required. |
| 4 - FB | Feedback sense input | Internally connected to output for fixed 5 V version; no external divider needed - simplifies layout and improves stability. |
| 5 - ON/OFF | Enable control input | TTL-compatible; ≥1.4 V enables regulation, ≤0.8 V disables with 50 µA standby - allows microcontroller GPIO direct control. |
| 6 - GND | Power ground | Main return path for input/output capacitors and IC substrate; requires low-inductance connection to minimize noise and thermal resistance. |
| 7 - VIN | Input supply | Accepts 6.5–40 V DC; bypass with 22 µF tantalum close to pin to suppress high-frequency ripple and reduce EMI. |
| 8 - VSW | Switch node output | Drives external inductor and Schottky catch diode; high dv/dt node requiring tight layout and minimized trace area to reduce radiation. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed-output architecture | 5 V output with FB pin internally tied to VOUT - eliminates feedback resistors, reduces BOM count, and improves long-term output accuracy. |
| Integrated DMOS power switch | 0.3 Ω typical RDS(on) at 25°C - enables 1 A output with <100 mV conduction loss at full load, reducing need for heatsinking. |
| Patented internal compensation | No external compensation network required - accelerates design cycle and guarantees stability with recommended 33–68 µH inductors. |
| WEBENCH®-ready design flow | Fully supported in TI's WEBENCH Power Designer - generates complete schematic, bill-of-materials, efficiency plots, and thermal simulations from VIN/VOUT/IOUT inputs. |
| Robust fault protection | Auto-recovering current limit + thermal shutdown + frequency foldback - sustains operation during overload without latch-up or manual reset. |
Applications
| Industrial PLC I/O Module Power | Embedded Controller Core Rail |
|---|---|
|
Use Scenario: Powers isolated analog input/output circuits and communication interfaces (RS-485, CAN) in programmable logic controllers operating from 24 V DC bus. IC Role / Device Role / Timing Role: Primary buck regulator converting 24 V bus to clean, regulated 5 V for ADC references, optocoupler drivers, and microcontroller peripherals. Use Value: ±1.5% output tolerance ensures accurate 12-bit ADC reference stability; 90% efficiency limits board temperature rise in sealed enclosures. |
Use Scenario: Supplies 5 V core voltage to ARM-based industrial gateways with Ethernet, Wi-Fi, and real-time OS execution. IC Role / Device Role / Timing Role: Point-of-load (POL) converter downstream of a higher-voltage intermediate bus, enabling localized regulation near processor power pins. Use Value: 260 kHz switching allows compact 33 µH inductor footprint; TTL ON/OFF enables coordinated power sequencing with SoC reset signals. |
| Medical Sensor Signal Chain | Test Equipment Auxiliary Supply |
|
Use Scenario: Generates low-noise 5 V rail for precision op-amps, instrumentation amplifiers, and sigma-delta ADCs in portable diagnostic devices. IC Role / Device Role / Timing Role: Secondary regulator following a front-end AC/DC adapter, providing isolated, low-ripple power to sensitive analog signal paths. Use Value: Fixed 5 V output avoids resistor-divider drift; thermal shutdown prevents overheating during extended calibration cycles. |
Use Scenario: Provides stable 5 V bias for DUT interface circuitry (level shifters, relays, LED indicators) in automated test equipment racks. IC Role / Device Role / Timing Role: General-purpose buck supply supporting multiple DUT interfaces simultaneously, tolerant of 24 V field wiring variations. Use Value: 40 V absolute max input withstands inductive kickback from relay coils; 1 A rating supports concurrent activation of 5+ channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2675-5.0 | Same silicon, identical electrical specs, but offered in PDIP-8 (P) or WSON-16 (NHN) packages - no SOIC-8 suffix or RoHS exemption coding. | PDIP variant suits through-hole prototyping; WSON offers smaller footprint and better thermal performance but requires reflow-only assembly. | Select LM2675-5.0/P if hand-soldering or breadboarding is required; choose NHN only when space and thermal constraints justify QFN reflow process. |
| TPS54202DR | 2 A synchronous buck, 4.5–28 V input, adjustable output, 500 kHz switching - higher current, wider input, but requires external feedback resistors and lacks fixed 5 V option. | Better suited for designs needing >1 A or dynamic output adjustment; not drop-in due to different pinout, control scheme, and external component requirements. | Choose TPS54202DR only when upgrading current capability or adding programmability; LM2675M-5.0/NOPB remains optimal for simple, cost-sensitive 5 V/1 A fixed-rail needs. |
Compared with LM2675-5.0/P and TPS54202DR, the LM2675M-5.0/NOPB delivers the most direct path to production for fixed 5 V/1 A applications - requiring zero feedback components, supporting standard SOIC-8 layout reuse, and offering guaranteed RoHS compliance and lead-free finish without derating.
Availability
LM2675M-5.0/NOPB is available at Aetrix Electronics and suitable for industrial automation, embedded controller power, and medical sensor supply applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for LM2675M-5.0/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability power conversion ICs.
The LM2675 series belongs to TI's SIMPLE SWITCHER® portfolio - designed specifically for ease-of-use in cost-sensitive, medium-power DC-DC applications where minimal external components and rapid time-to-market are critical.
FAQ
What is the maximum input voltage rating for LM2675M-5.0/NOPB?
The absolute maximum input voltage for LM2675M-5.0/NOPB is 45 V, but the recommended operating range is 6.5 V to 40 V. Operation above 40 V risks exceeding safe junction temperature or triggering overvoltage protection, and is not characterized. For 24 V industrial systems with transient spikes, the 40 V upper limit provides margin against ISO 7637-2 Pulse 1/2a events.
Does LM2675M-5.0/NOPB require external feedback resistors to set its output voltage?
No. The LM2675M-5.0/NOPB is a fixed 5 V output variant - its FB pin is internally connected to the output, eliminating the need for external resistor dividers. This simplifies layout, improves long-term output accuracy, and removes resistor tolerance and temperature drift as error sources. Only the adjustable version (e.g., LM2675MX-ADJ) requires external resistors.
What package type is used by LM2675M-5.0/NOPB, and is it RoHS-compliant?
LM2675M-5.0/NOPB uses the 8-pin SOIC (D) package, 4.9 mm × 6.0 mm body size, with NiPdAu lead finish. It is fully RoHS-compliant and lead-free, as indicated by the "/NOPB" suffix per TI's packaging nomenclature - meaning "No Lead (Pb) Finish, Green (RoHS)" and qualified to JEDEC J-STD-020 moisture sensitivity level 3.
How does the ON/OFF pin function on LM2675M-5.0/NOPB, and what is its standby current?
The ON/OFF pin on LM2675M-5.0/NOPB is a TTL-compatible enable input: driving it ≥1.4 V (or leaving it open) enables regulation; pulling it ≤0.8 V disables the IC into low-power standby mode. Typical standby quiescent current is 50 µA at 25°C, rising to 150 µA across –40°C to +125°C - enabling efficient power gating in battery-powered or energy-harvesting systems.
Can LM2675M-5.0/NOPB be used with ceramic output capacitors instead of tantalum?
Yes - LM2675M-5.0/NOPB supports ceramic output capacitors, provided they meet minimum effective capacitance (≥47 µF) and ESR requirements (<50 mΩ). Ceramic caps reduce size and improve reliability versus tantalum, but require careful attention to DC bias derating and microphonic effects. TI's application note SLVA393 confirms stable operation with X5R/X7R ceramics when combined with appropriate input filtering and layout practices.
LM2675M-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 6.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 260kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2675M-5.0/NOPB FAQ
1.How can I place an order for LM2675M-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2675M-5.0/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM2675M-5.0/NOPB reliable?
The price and inventory of LM2675M-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2675M-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2675M-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2675M-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2675M-5.0/NOPB?
LM2675M-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2675M-5.0/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM2675M-5.0/NOPB?
For technical support, including LM2675M-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2675M-5.0/NOPB requirements.
6.How does Aetrix verify that LM2675M-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2675M-5.0/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM2675M-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2675M-5.0/NOPB?
All LM2675M-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2675M-5.0/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM2675M-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM2675M-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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